Polishing roll



POLISHING ROLL R. K. BROOKS FiledNov. 12, 1954 May 5, 1936.

A I TORNEY.

Patented May 5, 1936 UNITED STATES PATENT OFFICE POLISHING ROLL tion of New York Application November 12, 1934, Serial No. 752,644

18 Claims.

My invention relates to polishing rolls.

It has among its objects to provide an improved polishing roll structure, and, more particularly, an improved felt roll of the type especially adapted to polish knives or other articles, or to use in finishing fabrics such as silk. A further object of my invention is to produce such an improved roll especially adapted to utilize small pieces of scrap felt, thereby making it possible to produce a roll from new felt with substantially less expense than necessary where large felt discs are required, and while at the same time reducing the expense to approximately the present cost of rolls made of remnants of used felt printing press blankets or the like, and producing a definitely superior article. Still further objects of my invention are to provide an improved felt segment carrying unit adapted to be assembled with other units into a roll, and an improved felt segment and carrying disc therefor in such a unit requiring a minimum of felt and having improved means for securely positioning thereon the segments, while also being adapted to permit the ready connection or removal of the latter and to be readily and quickly assembled with other like units to form a satisfactory roll. Other objects of my invention are to provide improved axially interconnecting means for such units whereby a plurality of the same may be assembled with facility as aforesaid to produce a roll caving long wearing qualities, while also being adapted to permit the roll units to be removed bodily and readily and quickly when desired, as for repairs. These and other objects and advantages of my improved construction will, however, hereinafter more fully appear.

In the accompanying drawing, I have shown for pu p ses of illustration, one embodiment which my invention may assume in practice.

In this drawing- Figure 1 is a side elevation of a roll constructed in accordance with my invention, the same being partially broken away between its ends to facilitate illustration;

Figure 2 is an end view of this roll, one of the end clamping members thereon being broken away to expose an adjacent portion of the end of the roll;

Figure 3 is a transverse sectional view taken on line 3--3 of Figure 1;

Figure 4 is an enlarged partial longitudinal sectional view on line 4-4 of Figure 2;

Figure 5 is a transverse sectional view on line 5-5 of Figure 1;

Figure 6 is a detail plan view of one of the felt segments;

Figure 7 is an enlarged detail view of the interconnecting means between adjacent units, and also shown on a smaller scale in Figure 4, and

Figure 8 is a diagrammatic view showing the manner of cutting the felt segments from a strip.

In this illustrative construction, I have showna roll, generally indicated at I, and comprising a shaft 2 having thereon a series of felt carrying units 3 disposed along the body of the roll in parallel relation-and clamped in position thereon between any. suitable end clamping means, herein including a like collar 4 and nut 5 at each end of the roll; the felt carrying units 3 being of an improved construction and also being operatively interconnected and positioned in an improved manner as hereinafter described.

Referring more particularly to the construction of the units, it will be noted that each of the same is of identic construction so that a description of one will suffice for all. As shown in Figures 2 to 5, it will also be noted that each unit comprises a. central disc 6 of suitable material, preferably a composition such as fiber or the like, although metal may be used if desired. Moreover, it will be noted that herein this disc 6 is flat and of relatively small outside diameter as compared with the outside diameter of the.

finished roll, while also being provided with a central aperture 1 adapted'to be received on the shaft 2 and permit the disc to slide longitudinally of the latter. Adjacent the disc periphery, it will also be noted that improved felt positioning means are provided, herein in the form of a. plurality of rivets or rivet like members 8; suitably, and herein equally spaced around the disc. As shown each of these members 8 has an enlarged body 9 fixed in a corresponding aperture in the disc. Moreover, it will be noted that each of these bodies 9 is provided with an extension ill of smaller diameter than the body and of such length as to extend through a felt segment hereinafter described, as shown in Figure '7. It will also be noted that these projections II) are herein so disposed around the periphery of the disc, that each 'felt segment ll (see Fig. 6) is positioned on two adjacent pins l0 extending through the inner periphery of each segment,-while the several segments are uniformly disposed in non-overlying relation around the disc, as shown in Figure 3, in such manner as, although each unit is formed of a plurality of small segments, to present, in effect, a complete felt disc having radial slits in its outer periphery. Moreover, it will be noted that the segments H, while having their inner ends extending only slightly inside the outer periphery of the disc 6, have their outer ends extended substantially beyond this periphery, in

such manner as to provide an ample working or wearing area on the periphery of the segments while only requiring a small amount of unusable felt for attachment to the disc.

Referring more particularly to Figures 1 and 4, it will be noted that each body 9 is also provided with a socket H in the face thereof opposite that carrying the pin it. Thus, these sockets I2 are each adapted to receive the extremity of the pin Ill projecting from the next adjacent disc- 6 when the several units 3 comprising the several discs 6 and segments thereon, are assembled on the shaft 2. Also, it will be noted that all of the pins ill have their extremities seated in such sockets so spaced from the inner ends thereof that when the several discs are pressed together, the segments H disposed between them are very securely positioned at their inner peripheries, all in such manner as to produce an exceedingly secure connection and a particularly effective yet readily connectible and disconnectible one. As regards the roll surface formed thereby, here attention is also directed to Figure 5 wherein it will be noted that the segments il in adjacent units are disposed in laterally staggered relation, this arrangement tending to produce a more effective polishing structure, and also being made possible by the provision of the pins in in the arrangement set forth, which permits the several units to be assembled in any desired angular relation one to another and clamped in such a staggered relation.

It will also be noted that when the units 3 are positioned as shown in Figure 4, the clamping member 4 at one end of the roll is enabled to press directly against the disc 3 on the left hand end of the roll, as shown in Figure 1. Further, only a single plain supplementary disc i3, shown in Figure 4, and having only apertures It in its periphery and adapted to receivethe adlacent ends of the pins III on the other discs is required between the right hand felt segments and the right hand clamping member 4. Moreover, it

will be evident that when the left and right hand clamping members 4 are pressed against their adjacent left hand disc 6 and right hand member l3, respectively, the several units are very effectually clamped together, at the same timethat a construction is produced permitting the roll' to be readily taken apart when desired, as, for example, for the substitution of damaged felt se ments on certain discs or the entire replacement of the segments on all the discs when the roll is worn out.

It will be observed that in the preferred form of my invention the discs are quite thin, which has the advantage that the rings of polishing material can be placed quite close together. The sockets I! in the particular form shown are of a depth approximating the thickness of the discs and the pins are of greater length than the thickness of the discs so that they interlock the discs and properly support polishing material of approximately the same thickness as the discs. It will further be noted that the structure is such that when the parts are assembled, the pins do not bottom in the sockets and the segments are clamped between the discs with an effective annular clamping around the discs, while exact fitting or finishing of the pins and sockets is also made unnecessary.

In Figure 8, I have also shown the segments ii in process of being cut from a blank I 5 in the form of a narrow rectangular strip of felt. From that figure it will be evident that substantially the whole of the strip is utilized in cutting the segments, only such small narrow portions as the parts l6 being waste. Moreover, it will be evident that only such long narrow strips i5 being required, and such strips being frequently only usable as waste in felt mills, a very inexpensive source of supply of new felt is available.

As a result of this construction, it is p ssible to reduce the cost of the rolls by approximately 25%, as compared with rolls utilizing whole, centrally apertured, radially slit discs of new felt, while producing an equally effective roll. Also, it is made possible, at a cost approximately that of rolls made with whole discs cut from the usual various used remnants, such as waste used felt previously used in printing press blankets or paper mills, to produce a markedly superior product having new felt and far longer life than is obtainable when using such used remnants. It is also wholly free from dirt, grit and oil, such as ordinarily produce difficulty when using waste used felt while also free from the uneven wear apt to be' characteristic of such remnant made rolls and arising from the presence of portions of uneven texture or quality along the arbor. Here, it will also be understood that while illustrated in connection with a roll, comprising felt segments, my invention is not limited to use with segments of this material, segments of any other textile material or of leather or other material being usable in connection therewith, if desired. These and other advantages of my improved construction will, however, be clearly apparent to those skilled in the. art.

While I have in this application specifically described one embodiment which my invention may assume in practice, it will be understood that the same has been shown for purposes of illustration, and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a polishing unit, a disc having onpne face a plurality of pins, and socket means at the opposite face of the disc and in alignment with said pins for receiving corresponding pins 018 an adjacent disc. i

2. In a polishing unit, a disc having pne one face a plurality of pins, socket means at the opposite face of the disc for receiving corresponding pins on an adjacent disc, both said pins and socket means extending parallel to theaxis of said disc, and polishing segments having perforations through which said pins extend.

3. In a polishing unit, a disc having on one face a plurality of pins, socket means at the opposite face of the disc for receiving corresponding 1 pins on an adjacent disc, certain of said pins and socket means being in alignment on the same axis, and polishing segments in a'plane parallel to that of said disc and through which said pins extend.

4. In a polishing unit, a disc having on one face a plurality of pins, and socket means at the 0pposite face of the disc for receiving corresponding pins on an adjacent disc, said pins being of greater length than the depth of said socket means.

5. In a polishing unit, a disc having members seated in said disc, and pins and socket means on opposite faces of said members and spaced around said disc, said disc having a thickness less than the length of the pins.

6. In a polishing unit, a disc having a series of perforations extending therethrough adjacent the outer periphery thereof and members seated in said perforations, and pins and socket means on opposite faces of said members and spaced around said disc, both said pins and socket means extending parallel to the axis of said disc, said socket means presenting sockets of less depth than the length of said pins.

7. In a polishing roll, a pair of adjacent discs,

one having pins extending parallel to the axis of the disc, polishing members on said pins between said discs comprising fiat segments of polishing material lying in a plane parallel to the planes of the discs and abutting each other at their side edges, and socket means at the opposite face of the other disc receiving the ends of said pins.

8. In a polishing roll, a pair of adjacent discs, one having pins extending parallel to the axis of the disc, polishing segments on said pins between said discs, and socket means at the opposite face of the other disc receiving the ends of said pins, and of greater depth than the portions of said pins protruding from said segments.

9. In a polishing roll, a pair of adjacent discs each having perforations therein, one disc having pins extending parallel to the axis of the disc, polishing members between said discs comprising segments lying in planes parallel to the planes of the discs and abutting each other attheir side edges and each having perforations through which said pins extend, socket means at the opposite face of the other disc receiving the protruding ends of said pins and of greater depth than said p tr d g ends, and members seated in perforations of different discs carrying said pinsand socket means respectively.

10. In a polishing roll, a series of coaxially disposed polishing material carrying units, interconnecting means on adjacent units for connect ing polishing material therebetween and connecting said units against relative rotation while enabling assembly in different angular relations including material positioning members disposed longitudinally of the unit axes between said units, and means for clamping the same together to form a roll.-

11. In a polishing roll, a shaft, a series of coaxially disposed units thereon each carrying a series of removable polishing segments, interconnecting means on adjacent units for connecting the same against relative rotation including segment positioning members extending through said segments, and means on said shaft for clamping said units together on said roll.

12. In a polishing roll, a series of polishing material carrying discs each having pin means on one face and socket means at the opposite face, polishing elements between the discs engaging and positioned by said pin means, and means for clamping said discs on the polishing elements with the pin means received in adjacent socket means.

13. In a polishing roll, a series of polishing material carrying discs each having material positioning pin means on one face and socket means at the opposite face, means for clamping said discs in position with the pin means thereon received in adjacent socket means, and polishing material in the form of segments interposed at their inner edges between adjacent discs and pierced by said pin means, said material and said socket means being of greater aggregate depth than the length of said pin means.

14. In a polishing roll, a series of polishing material carrying discs each having material'positioning pin means on one face and socket means at the opposite face, polishing elements between the discs removably held in place by said pin means, and means for clamping said discs on the polishing elements with the pin means received in adjacent socket means, said pin means and. said socket means of each disc comprising members separate from the disc seated in perforations through the disc, each of said members having a pin at one end and a socket formed in the opposite end.

15. In a polishing roll, a series of polishing material carrying discs each having material posi-.

tioning pin means on one face and socket means at the opposite face, polishing material between said discs positioned by said pin means, and means for clamping said discs on said material with the pin means received in adjacent socket means, said material being in the form of segments and the groups of segments being angularly offset relative to one another to bring the segments on adjacent discs into staggered relation while said pins are in said socket means.

16. In a polishing roll, a series of polishing material carrying discs each having material positioning pin means on one face and socket means at the opposite fac'e, polishing material between said discs positioned by said pin means, and means for clamping said discs on said material with the pin means received in adjacent socket means having end clamping members including a clamping member engaging the socketed face of one .end disc, and a supplemenary disc engaged by a clamping member at the opposite end and apertured to receive the pin means on the adjacent disc.

17. In a polishing roll, a shaft, a plurality of discs embracing said shaft, a plurality of polishing elements surrounding said shaft, each element comprising a plurality of separate segments located in a plane at right angles to the shaft and having their inner ends interposed between adjacent discs, means located adjacent the ends of the roll for clamping the discs on the inner ends of the segments, and means for removably holding the inner ends of the segments of a polishing element on the side portion of one of the discs between which said element is interposed, said segments being freely detachable from their holding means upon release of said clamping means and lateral separation of said discs.

18. In a polishing roll, a shaft, a plurality of discs embracing said shaft, a plurality of polishing elements surrounding said shaft in the intervals between the discs and in alternating arrangement with the discs, each element comprising a plurality of separate segments located in a plane at right angles to the shaft and having their side edges abutting each other, the inner ends of said segments being interposed between adjacent discs and each provided with a plurality of perforations, pins on the sides of the discs extending through perforations of each segment for holding'the segments in assembled position, means carried by the discs and coacting with the ends of the pins protruding from the segments for interlocking adjacent discs against relative rotation, and means for clamping the discs on the inner ends of the segments, said. segments being freely detachablefrom said pins upon release of said clamping means and lateral separation of said discs.

RAYMOND KING BROOKS. 

